Monitoring radiation and EMF (Electromagnetic Fields) is vital to protect workers from the threats that they pose. Obtaining accurate exposure measurements is very important; understanding the level of radiation at a specific site is the first step towards the long term goal of reducing exposure to radiation. Pine supplies highly accurate radiation survey meters designed for measuring the complex electromagnetic field emissions from computers, video display terminals and any CRT or similar devices within the office.
To find out more, please click on a product from the list. At Pine, we specialize in delivering total equipment solutions and providing technical advice on what to rent and how to use it; our rental fleet is second to none and our equipment is always tested and delivered ready to use.
The Vector Gaussmeter displays the true magnitude of the field at any location as well as the X, Y, Z components of up to 800 gauss. Also separately displays peak values of X, Y, Z, and magnitude. There is a sound alarm that determines the locations where the field magnitude exceeds user-set threshold. Because magnitude is measured, the orientation of the sensor (E-W, N-S, and up-down) is not important; this is unlike a 1-axis gaussmeter. With the VGM the user can set the alarm to 15 gauss (for example) and it will sound (simultaneous with a red light) whenever the field exceeds 15 gauss for at least 5 milliseconds. Using the meter this way, it is easy to make a map of the 15 gauss line (or for whatever threshold is set) around a strong magnet. When using the alarm, of a steel part can be rapidly scanned to show if any areas exceed the set threshold. Then the “peak hold” function can be interrogated, showing the peak values of X, Y, Z (including polarity) and magnitude that occurred during the scan. Peak hold also has a 5 millisecond response time. The “reset” button resets all peak hold registers to the present values of X, Y, Z and magnitude, which are displayed in real time when the knob is set to “measure.” Offsets can be manually applied to X, Y, and Z, or a “relative zero” can be applied to all three. This subtracts out the field at the time the button was pressed.
An improvement on the flux gate magnetometer, the AlphaLab DC Milligauss Meter measures magnetic fields (technically “flux density”) up to several times the strength of the Earth field. It has a resolution of 0.01 milligauss (1 nanotesla) and a range of +/-2000 milligauss (200 microteslas). The meter's three magnetoresistive sensors are a major improvement over an uncompensated fluxgate magnetometer both in cost and stability. In fact, the sensors approach a proton precession magnetometer in temperature stability.
Each of the three displays has an extra digit compared with most portable magnetometers. Each is 4 ½ digits and displays in two ranges: +/- 1999.9 and +/- 199.99 milligauss. Update is three per second. Because the Earth's field is typically about 500 milligauss, nine “offset” controls (three for each of X,Y,Z) allow you to add or subtract up to 600 milligauss with precision of .01 milligauss. Therefore, the Earth's field can be subtracted out when required. If reading in the more sensitive 199.99 range, this field neutralization feature is often necessary, because the field is usually stronger than 200 milligauss.
The wide dynamic range of the displays (19,999 count; both polarities), along with the large range of offset (+/- 600 milligauss) and high stability of the meter (+/- .01 milligauss), allow for stable detection of small changes in a large background field. On the higher sensitivity range, changes of .01 milligauss can be reproducibly measured in up to +/- 800 milligauss of background field. On the lower sensitivity range, absolute field of .1 milligauss can be measured in up to +/- 1999.9 milligauss of background field.
The sensor is a 25 mm (one inch) cube at the end of cable that is normally four feet long, but other custom lengths are available. Each axis reads negative when pointing toward the south pole of a magnet and positive toward north.
At fixed temperature, reproducibility is +/- 0.01 milligauss (1 nT) and the temperature coefficient of the offset is less than 0.01 milligauss/°C. The temperature coefficient for gain is less than .0015%/°C. As shipped, gain accuracy is +/-0.5% and the meter offset is +/- 0.5 milligauss with all offset knobs set at zero. All specifications are at temperatures 0 to 45°C. X,Y,Z are aligned with the cube edges to accuracy one degree unless you specify 1/10 degree in the drop-down box below.
MGM3AXIS Output Jack Description:
The outputs are an analog voltage, with 1 Volt = 1 Gauss +/- 0.5%. Range is +/- 2 gauss (= +/- 2V). Normally, it is a "slow-moving" DC voltage (valid DC to 3 Hz), but a higher bandwidth can be specified (DC to 300 Hz at the 3 dB point) at no extra cost. The X, Y and Z outputs each has a separate BNC output with a single common ground.
A sophisticated radon gas detector now available to rent, the RAD7 both detects and continuously monitors Radon and Thoron gases. Easy to use the instrument can equally be used both in laboratories and out in the field by radon testers, engineers, consultants and inspectors. Simple to use, the RAD7 has pre-programmed set-ups for common tasks and comes complete with a built-in air pump, rechargeable batteries and printer.
Make isotropic measurements simply and economically with the Model 3627 three-axis ELF (extremely low frequency) magnetic field meter from Holaday Industries. Signals from the three orthogonal sensing colis combine in a vector sum to provide accurate magnetic field measurements from any ELF source, including single or polyphase electrical circuits, VDTs, household wiring and appliances. The unit's remote sensor and analog meter make quick work of finding ELF distributions in any application, and its wide dynamic range makes it an extremely flexible tool for measurements ranging from home ambient environments to high current factory locations
This hire package includes the Holaday Model 3604, which is an ELF/power frequency survey meter, the Model 3603, a VLF/VDT radiation survey meter, and the Model 3616 fibre optic remote control, for situations where the surveyor must be isolated from the instrument. An optional dielectric stand is also available for rental.
The Model 3604 ELF (extremely low frequency) field strength meter evaluates electric and magnetic fields associated with 50/60 Hertz power lines and electrically operated equipment and appliances. The 3603 VLF (very low frequency) radiation survey meter is designed for measuring the complex electromagnetic field emissions from computers, video display terminals and any CRT or similar device radiating within 10 KHz to 300 KHz.
The Model 1600 microwave meter accurately measures microwave leakage from microwave ovens operating at 2450 MHz and 915 MHz. Three survey ranges are available, measured values are indicated on an easy-to-read, front panel analog meter. The rental package includes a probe and cable, and plastic beaker for the water load used in testing.
The Ludlum 192 Micro R Meter is a low level (Micro R) gamma meter. It features 4 ranges, auto adjust alarm settings and 2' x 1' sodium iodide (naI) T1 scintillator. The 192 Micro R Meter's sensitivity typically is 700 cpm/microR/hr (Cs-137 gamma). This unit is micro-processor based and has total counting range from 0-5,000 µR/hr.
The Ludlum Model 2241-2RK is a portable general-purpose survey meter equipped with a Geiger-Mueller detector for measurement of alpha, beta and gamma radiation. The Model 2241 operated in either Ratemeter Mode with a moving decimal point and six-digit in Scaler Mode. The unit has both visual and audible alarms.
The Model 3 is a portable radiation survey instrument with four linear ranges used in combination with exposure rate, or cpm meter dials. The instrument features a regulated high-voltage power supply, unimorph speaker with audio ON/OFF capability, fast-slow meter response, meter reset button and six-position switch for selecting battery check or scale multiples of Xo.1,X1,X10 and X100. Each range multiplier has its own calibration potentiometer.
IEC-62233 compatible field probe for the extended mobile communications range
DoseRAE 2 is a compact, direct-reading and alarming electronic personal radiation detector. It uses a diode and a scintillation crystal to detect X- and gamma radiation, and provides real-time monitoring of personal dose and dose rate. The real-time radiation dose rate
monitoring allows immediate reaction in case of radiation occurrences and can help reduce radiation exposure. By measuring dose equivalent and dose equivalent rate, this detector provides the functions of a dosimeter too. It also measures radiation exposure and
exposure rate, which is appropriate for controlling the exposure of emergency responders to photon radiation.