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- New mA Loop Calibrator with HART Communications
- A New Rugged UV Single or Multi-Component Gas Analyzer from Ametek Western Research
- Real Time Dust/Aerosol Monitor with NIST traceable field calibrator
- Sentinel CBRN PAPR – Powered Air Purifying Respirator
- Selection, Care and Use of Chemical Protective Clothing
- Safety Inc Calibration Gas promotion through 12/31/13
- Understanding Thermal Glove technology
- Meeting ANSI standards with Encon showers and Eyewashes
- All You Ever Wanted to Know About Detector Tubes
Flexible Current Transformer (rocoil)Posted by: Caroline Ronten - Thursday, December 5, 2013
Now available from Dent Instruments
New three-channel integrating transconductance amplifier
RoCoil TCA-5 translates the electrical output signal from the RoCoil current sensor to a 5 amp AC current, emulating a traditional current sensing transformer.
- Flexibility and ease-of-installation for applications using power meters with 5A current transformer inputs
- DIN rail or panel mounted device requiring an external 48 VDC power supply.
- Factory-calibrated for use with DENT RoCoil CTs
- Output current is between 0 – 5.0 Amps (RMS)
- Available RoCoil sensing ranges are 500, 1000, 2500, and 5000 Amps (selectable)
- Use on three-phase or single phase systems
- More information
New mA Loop Calibrator with HART CommunicationsPosted by: Caroline Ronten - Tuesday, November 19, 2013
New mA Loop Calibrator with HART Communications from Martel/Beta Calibrators
- Supports some the HART universal and common practice commands allowing it to be used as both a loop calibrator and communication tool.
- HART communications for universal and common practice commands
- 24VDC loop power with mA Measure Mode (-25% to 125%)
- Built in selectable 250Ù Resistor for HART Communications
- Monitor PV unit, PV, PV mA, PV % and Trim DAC zero/gain
- Capture twenty transmitter configurations for upload via BetaLOG HART software
- More information
A New Rugged UV Single or Multi-Component Gas Analyzer from Ametek Western ResearchPosted by: Caroline Ronten - Tuesday, November 12, 2013
- Can be used as standalone or part of an CEM
- Configure to measure most gas species that absorb in the UV including SO2, NO, NO2, H2S, COS, CS2, NH3, and BTX.
- Measure up to five components simultaneously without interference from Water and CO2
- 19” Rackmountable
- Supports Modbus/RS485, Ethernet connectivity
- Analog and digital outputs, serial communications via Modbus protocol
- Optional paramagnetic oxygen sensor can be included to provide O2 corrected concentrations
- More information
Real Time Dust/Aerosol Monitor with NIST traceable field calibratorPosted by: Caroline Ronten - Thursday, November 7, 2013
For real-time detection of airborne dusts, fumes and aerosols the Casella CEL 712
A rugged, hand-held, data logging instrument. The only instrument of it’s type that can be zero and span calibrated by the user – no need for expensive annual factory span calibrations
- Easy to use, with an intuitive icon driven interface
- Large graphical color display to instantly view current level and concentration over time to identify events and trends.
- Ideal for walk-through surveys or continuous evaluation of workplace or ambient environments.
- Provides qualitative data of aerosol and dust concentration which cannot be obtained through gravimetric air sampling methods alone.
- Accommodates a range of accessories for gravimetric and size-selective sampling applications
- Highest maximum measurement range of any hand-held real-time dust monitor available today
- Zero- and span-calibrated in the field for maximum accuracy.
- More information
Sentinel CBRN PAPR – Powered Air Purifying RespiratorPosted by: Caroline Ronten - Tuesday, October 29, 2013
Hooded papr is NIOSH CBRN approved, and can be converted for use with P100 (hepa) cartridges to protect health care workers against infectious respiratory diseases such as H1N1, N7N9, and MERS
• Secure threaded hose/head cover interface is easy to use with speaking diaphragm for easy communication
• Air flow capacity 7.5-8cfm with smooth air flow
• NiMH batteries eliminate “memory effect” associated with NiCd batteries
• Rugged dual chamber blower design for increased durability
• NiMH, lithium, Alkaline batteries with low battery alarm
• Easily decontaminated
• Charger included
• Please call for additional details – 978-532-7330.
Safety Inc is the exclusive service center for ILC Dover paprs, and also a master distributor. We have developed a multi-unit charger for the ILC Dover paprs.
Selection, Care and Use of Chemical Protective ClothingPosted by: safetyinc - Thursday, October 24, 2013
- Rules and Regulations
- Care and Use
For more information on our Learn From the Experts Webinar program click here.
Safety Inc Calibration Gas promotion through 12/31/13Posted by: Caroline Ronten - Thursday, October 17, 2013
Trade in your calibration gas cylinders and receive $ 25 off your purchase of a replacement cylinder.
- 100’s of gases available
- Single gas per cylinder or multiple gases per cylinder
- NIST traceable accuracy
- High and low concentrations
- Restrictions: $25 credit must be used at time of trade in.
- More information
Understanding Thermal Glove technologyPosted by: Caroline Ronten - Tuesday, October 8, 2013
A first degree burn affects the epidermis only. A second degree burn affects the dermis at some level (superficial or deep). A third degree burn affects both the epidermis and the dermis, destroying them . Scalding may occur at 113°F and accelerates as the temperature increases.
Thus the importance of thermal gloves. The parameters which influence thermal insulation are: contact temperature, pressure or weight of the part, and contact time/non-contact time.
EN 407 specifies the test methods and the general requirements, the classification and the marking of gloves for protection against heat and/or fire (flames, contact heat, convective heat, radiant heat, small metal splashes or large projections of molten metal) for thermal gloves.
The contact heat level measures whether it takes more than 15 seconds to raise the temperature inside the glove by 18°F (10°C), in an environment at ambient temperature and with the hot part in constant contact.
- Contact Heat Resistance Lev1 -100°C (212ºF)
- Contact Heat Resistance Lev 2 – 250°C (482ºF)
- Contact Heat Resistance Lev 3 -350°C (662ºF)
- Contact Heat Resistance Lev 4 -500°C (932ºF)
The level is achieved as long as inner glove temperature does not exceed 18°F after 15 seconds of contact. Glove is under no pressure. Contact is one time only.
Standard EN 407 is not discriminating: Even a thin glove may pass level 1 even if they are not designed for thermal protection. However EN 407 does not address degeneration of the materials: a glove may meet the Standard even though its constituent materials deteriorate at the defined temperatures. In addition, EN 407 doesn’t allow gloves to be ranked according to their thermal insulation
In addition to contact temperature and pressure or weight of the part, contact vs. non contact time is of key importance. How long is the time between two contacts with the hot part , the glove can cool down completely. Contact time is enough to recommend a glove Ex : Moving an individual hot component from one work station to another.
Repeated Contact – Short time between two contacts with the hot part, the glove can’t cool down completely. “Non contact” time has also to be taken into account to recommend a glove. Ex : Rapid inspection of metallic parts after thermal process.
Thermal insulation should not be confused with thermal resistance. Thermal insulation is the capability of the material to reduce the heat transfer between hot part and the hand. Thermal resistance is the ability of the material no to be deteriorated at high temperatures.
It is important to take into account the materials used in a glove when looking at thermal results. For example, natural rubber starts to soften at 150°C (302°F) and leaves a mark on the product being handled. It will even start to release a distinctively smelling smoke. Polyamid gloves start to stick to the part being handled at 150°C (302°) but a Kevlar glove at the same temperature will stay intact.
Generally the thicker the glove results in a longer the allowed contact time. More layers improve results, with air being the best insulator of all. Each layer in the glove captures the maximum amount of air and protects the hand effectively from the hot part. The thermal insulation can be as effective as thick fabric. Even dot embossing provides better thermal insulation.
When selecting thermal gloves, look for the EN407 ratings as well as the temperature, pressure or weight and contact vs. non-contact time of your application.
Meeting ANSI standards with Encon showers and EyewashesPosted by: Caroline Ronten - Tuesday, October 1, 2013
The American National Standards Institute came out with new standards between 1990 and 1998 regarding minimum safety to the user during irrigation operations of a shower or eyewash, ANSI Z358.1-2009.
The changes that occurred between the 1990 and 1998 standards focus on:
- Distance from the hazard and the shower – now 10 SECONDS from the hazard – It must be on the same level with no obstructions to access it.
- It must have high visibility signage – It must allow simultaneous operation of an emergency shower and eyewash
- The pressure must be 35 psi dynamic, flow 20gpm, 1 ½ line supply
- Combination units simultaneously could exceed 30 gpm
- Eyewash require 35 psi dynamic pressure, flow at 3.5 gpm, ¾” line
- Face wash require 35 psi dynamic pressure, flow at 8gpm, ½” line
- They also require annual inspections and weekly activations
- They require freeze protection for all units.
- They require that all plumbed units have tepid water, 78-92 degrees F
While hot water ceiling tanks are very common, they are known to have problems with bacteria and their performance issues fall short of what ANSI requires to maintain minimum safety to the user. Hot water heaters are often set to 85-90 degrees F but they need to be set at a minimum of 140 degrees F to prevent bacteria growth.
Either a blending valve or system will be needed. Requirements in selecting the proper system will depend on how many units would be used at the same time, what is the friction loss across the unit in full flow and what is the reaction of the by pass in the event of valve failure. In addition the blending system must be capable of blending and delivery 23-30 gpm. It also needs to be manufactured as a piece of safety equipment and meet the require reaction time of the bypass if the valve experiences a catastrophic failure.
Engineered systems are available from Encon to meet the objectives. All that is needed is to add water and power. They are designed either for indoor and outdoor applications whether electric, steam or air driven. These will allow you to meet the ANSI requirements for minimum safety to the user in safety showers and eyewashes.
All You Ever Wanted to Know About Detector TubesPosted by: Caroline Ronten - Wednesday, September 25, 2013
Gas detector tubes systems are complete sampling and analysis systems for determining the concentration of gases and vapors on the spot. They are used in Safety and Industrial Hygiene as well as process control and testing. There are two parts – a sampling pump and a detector tube. Tubes are chosen based on the target gas to be measured, and the measurement range for that gas.
The tube systems have benefits over other direct reading instruments in that
- No calibration is required – the tubes are “pre-calibrated”
- No batteries to charge or replace
- Simpler to use and maintain
- No need for explosion proof or intrinsically safe classification as there isn’t any power supply
- Much more economical
There are hundreds of detector tube models available that cover a wide range of substances from ppm to % levels. They are manufactured with ultra-high purity reagents. Some brands are calibrated for a single pump stroke, others require multiple strokes. The scale on each tube provides a direct reading of the concentration. Some brands are wrapped in a thin film that guards against shattering & dispersing of reagent in case of breakage
Sampling pumps come in two styles – bellows or piston style. The bellows (accordion like) uses multiple hand squeezes to draw a sample. The piston style accurately and reproducibly draws 100cc samples. Some pumps also include a stroke counter (an indicator showing when the sampling is complete) and an integral tube tip cutters.
Pumps generally cost $ 4-500, and tubes range in cost from $ 50 to $ 150 for a box of 10 tubes. Most samples are accomplished with a single tube, so a box of 10 tubes will yield 10 tests. Some tubes require a pre-conditioning tube (to filter out moisture, or other gases), so a box of 10 tubes will only yield 5 tests – the pre-filter and a tube are used for each test.