PRODUCTS: MODURAE
Photo-ionization Detector Module
Model
PDM-10A
Features
- Fast (<3/Sec.) and accurate (Sub-ppm Resolution) measurement of
Volatile Organic Compounds (VOC) from 0 to 2000 ppm
- Excellent Zero Stability over time
- Five wire output (power, 4-20mA signal, 0-2V signal and two grounds) for
easy and flexible system interface
- Operate with wide supply voltage 8 to 30 VDC n Built-in reliable
positive-displacement pump to achieve fast gas detecion response and fast
clear or reset of sensor chamber
- Reliable, electrodeless 10.6eV lamp for most toxic gas monitoing
applications
- Compact size, light weight and rugged construction - only 1.8"W x
1.8"H x 5.4" L
- Easy assembly and disassembly for routine cleaning and maintenance
Applications
The Photo-Ionization Detector Module (Model PDM-10A) is a complete
sensor module which can accurately measure the total VOC concentration
based on photo-ionization detection. The compact size, weight and rugged
construction provide a convenient way to integrate the sensor module into
a fixed point gas detection/monitoring system or bench top gas measurement
and analysis instruments. It is particularly suitable for applications on
hazardous waste sites, chemical factories, barges, and gas storage
facilities etc.
Description
The Photo-Ionization Detector Module (Model 10A) consists of a UV
light source, a detection chamber, optional sample draw pump and
associated electronic driver and measurement circuits. The sensor module
is designed so that it can be easily interfaced to a fixed point gas
monitoring system or benchtop instruments. There are five electrical
connections: V-ground, supply voltage, voltage output, current-ground and
4-20 mA current output. The Model 10A has an air inlet barb and an air
outlet barb for easy connection to external air sampling or collection
equipment. The built-in pump can be set up to 400 ml/min flow rate. This
allows air samples to be drawn into the sensor module from as far away as
200' through 5/32" Teflon tubing. The unit is preset at 40ml/min flow
rate from the factory.
Specifications
| Size | 5.4"L x 1.8"W x 1.8"H(13.7cm x 4.6cm x 4.6cm) |
| Weight: | 14.0 oz. (0.40kg) |
| Light Source: | 10.6eV electrodeless discharge lamp |
| Detection Chamber | Teflon/stainless steel sensor chamber (can be easily disassembled for cleaning and maintenance) |
| Supply voltage: | 8 - 30 VDC |
| Supply current | < 80mA |
| Gas measurement range | Fixed, typically 0-200 ppm but internally adjustable up to 0-2000 ppm (isobutylene or equivalent gas) |
| Analog output | 0-2 V and 4-20 mA |
| Alarm | 0 mA lamp failure |
| Sensitivity | ¡¾ 0.1 ppm |
| Repeatability | ¡¾ 2% |
| Accuracy | ¡¾ 10% of reading or ¡¾ 2 ppm (for 0-200 ppm range) |
| Calibration | Two point calibration with zero gas and standard reference gas |
| Response time | < 3 seconds (90% of concentration) |
| Gas sampling | piston pump with factory preset intake flow rate at approximately 40 ml/min |
| Temperature | -30¡ÆC to 70¡ÆC (-22¡ÆF to 158¡ÆF) |
| Humidity | 0% - 95% relative humidity (non-condensing) |