IntelliSAW IRM-48 Reader
Installation Manual
Page 24 of 28
IRM-48 Reader
910.00371.0001
7
S
PECIFICATIONS
TEMPERATURE
Operating Frequency
425 to 442 MHz
SAW Sensors
up to 12
Redundancy Model
Up to 4 redundant antennas
RF Transmit Power
Pulsed, -6 to + 10 dBm
4
RF Receive Sensitivity
-86 dBm
RF Receive Frequency Stability
± 700 Hz
RF Interrogation Distance
Up to 1.75 m (2.5 m with TPD air interface)
RF Interrogation Time
≤ 160 mSec
PARTIAL DISCHARGE
Number of Channels
Up to 4 IntelliSAW CAM Air Interfaces (TPD)
Measurement Method
Ultra-High Frequency (UHF)
Selectable Bands (Center Frequency)
300MHz, 600MHz, or 1200MHz
Measurement Types
Noise Floor, Surface Discharge (Corona), Internal Discharge (PD)
Measurement Scale
nonlinear scale, capability to calibrate to reference source
Sensitivity
100pC Q
pk
demonstrated in 24kV switchgear, installation dependent.
Response Time
100 mSec
HUMIDITY
Number of Channels
Up to 8 IntelliSAW IH-10 sensors (bussed)
Measurement Types
Relative Humidity, Ambient Temperature
COMMUNICATION INTERFACES
Data Bus Interface
RS485 (half duplex)
Data Bus Baud Rate
4800, 9600, 19200, 38400, 57600, or 115200 baud
Data Protocol
Modbus-RTU device
Response Time
500 mSec or longer timeout recommended. (typically < 100 mSec)
Configuration Interface
USB
Configuration Protocol
IntelliSAW Native
PHYSICAL
Operating Power
48 Vdc typical (24 to 60 Vdc), 3.5W
Dimensions
81 W × 142.5 L × 46 mm H
Weight
0.3 kg (10 oz)
International Protection (IEC 60529)
IP 20
Mounting Style
DIN rail mounted
Operating Conditions
-40°C to +70°C, 10 - 95% RH non-condensing
Elevation
Up to 5000m
4
Using administrative settings, levels to -13.5dBm may be attained. FCC modes reduce the maximum power using these settings.
