Description

Ultra 1000 series is a microprocessor based addressable sensor for detection of combustible gases. The self- contained sensor features user friendly interface and menu driven calibration procedure and configuration.

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 unit provides a 4-20mA signal proportional to 0 to 100% of the detection range. In addition the sensor may be addressed via MODBUS ® RTU interface. The MODBUS ® output provides sensor status, alarm & fault conditions. Alarm levels can be programmed via MODBUS ® RTU or via magnetic switch on the face of the transmitter board assembly.

Ultra 1000 can be calibrated in less than 2 ½ minutes. The calibration and the set-up parameters are retained in a non-volatile memory.

Measuring Range
0 to 100 % LEL

Repeatability
± 2 % Full scale

Zero Drift
< 5% per year

Response Time
T50 < 10 seconds
T90 < 30 seconds
with 100% LEL methane gas applied

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

Operating Temperature
-40°F to +158°F (-40°C to +70°C)

Operating Humidity
10% to 90% RH, non-condensing

Display
2 lines by 8 Character LC Display with back light

Status Indicators
LC Display for gas concentration,
Alarm relay status, calibration mode and
sensor fault status.

Mechanical Specifications
Length: 7 inches (178 mm)
Width: 5 inches (127 mm)
Height: 4.5 inches (114 mm)

Power Consumption
150mA @ 24 VDC typical

Alarm Relays
Fully programmable. 0 to Full scale range
of the sensor. Latching or Non-Latching.

Relay Ratings
SPDT Form "C" type Relay contacts
5 Amps @ 250 VAC or 30 VDC

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

Interface
RS-485 MODBUS ® RTU at 9600 Baud.

Calibration
Non-Intrusive activated by internal magnetic
switch

Cable Entry Hub
¾" NPT Female