Description

Model PT205 sensor is designed to monitor ambient air for oxygen concentration in the range of 0-25% by volume and provided a 4-20mA analog output .

The complete sensor consists of a stainless steel sensor head assembly, a user connection board and a transmitter board assembly. All of the sensor electronics are enclosed in an explosion proof instrument box. The unit's modular design allows easy maintenance, troubleshooting and high reliability. The low power microprocessor based sensor transmitter provides a 4-20mA analog signal proportional to 0 - 100% of the detection range of the sensor. Also an LED indicator on the transmitter board provides sensor status and fault condition.

Model PT205 Oxygen Sensor
Specifications

Measuring Range
0 to25 % Oxygen

Repeatability
± 2 % Full scale

Zero Drift
< 5% per year

Response Time
T90 < 30 seconds

Classification
Class I, division 1, Groups B,C &D

Operating Temperature
-4°F to +122°F (-20°C to +50°C)

Operating Humidity
5% to 90% RH, non-condensing

Mechanical Specifications
Length: 7 inches (178 mm)
Width: 5 inches (127 mm)
Height: 4 inches (100 mm)

Status Indicators
LED indicator of sensor status and fault
condition.

Input Power
14-28 VDC. 24 VDC nominal

Power Consumption
45mA @ 24 VDC

Analog Output
Linear 4-20mA (300 Ohms max. load)
< 1.0 mA - Sensor malfunction

Cable Requirement
3 wire shielded cable. Max loop resistance of
20 Ohms @ 24 VDC nominal

Cable Entry Hub
¾" NPT Female

Other Toxic Gas sensors available
Call factory or visit www.pem-tech.com