Raytek Thermalert GP User Manual

The GP™Series is a versatile, two-piece temperature monitoring system which combines a compact, value-priced monitor with an infrared sensing head. The heart of the system is the 1/8 DIN GP monitor which provides advanced infrared processing capabilities including peak and valley hold, averaging, and a user-adjustable offset. The rugged GPR sensor is available with standard- or close-focus optics and provides target temperature readings with 1% accuracy.

Along with its large 4-digit LED display, the monitor provides a user-defined 4-20mA or thermocouple output. Two adjustable setpoints/deadbands control 5V alarm outputs or optional 3A mechanical relays. The GP monitor accepts universal 110-220 VAC power, and provides a 24 VDC/50 mA excitation voltage for loop power to external sensors. All monitor functions are configured via the front panel, including °C/°F switching.

The GP monitor provides adjustable emissivity when used with the GPR and GPM infrared sensors. This high performance, 8 to 14 micron infrared sensor with detachable cable combines current loop driven signals with 35:1 optics.

The GPM sensor is a miniature stainless steel sensing head with 2:1 or 10:1 optics. The GP monitor also works with other Raytek infrared sensors, including the CI and MID.

Product Desciption

Highlights:

• Temperature range from -18 to 538°C (0 to 1000°F)

• Compact 1/8 DIN digital monitor with large 4-digit display

• Monitor and sensor functions configured on front panel

• Signal processing capabilities typically found on much larger systems

• Adjustable emissivity

• Universal 110-220 VAC power

• User-defined 4-20 mA or thermocouple output (J,K,E,N,R,S,T)

• Adjustable dual setpoints and deadband alarm outputs

• Choice of sensing head to match application requirements

• Standard- and close-focus optics available

• Accessories for cooling and air purging

• Field interchangeable sensing heads

Raytek

Noncontact Infrared Temperature Sensor

Spectral Response & Temperature Range:

Sensing Head Model: Spectral Response: Temperature Range: GPR 8 to 14 microns -18 to 538°C (0 to 1000°F) GPM 7.6 to 18 microns -18 to 538°C (0 to 1000°F)

System Accuracy (mA output) ±1% of measured value or ±1°C (2°F),

whichever is greater, @ 23°C ±5°C (73°F ±9°F)

System Repeatability ±0.5% of measured value or ±1°C (2°F) whichever is

greater

Response Time (95%):

GPR 700 mSec

GPM 1 Sec Emissivity: 0.1 to 1.09 digitally adjustable increments of .01 Signal Processing: Peak/Valley Hold (up to 998 sec, 999=infinite hold

with external reset) Variable averaging filter (up to 60 seconds) T-ambient: fixed background ambient temperature compensation

Outputs 4-digit, 7 segment LED display, °C/°F selectable

User configurable 4-20 mA current or thermocouple output (J,K,E,N,R,S,T)

Two adjustable setpoints with deadbands controlling +5 V alarm outputs or optional 3A mechanical relays

Power Supply 110/220 VAC, ±20%, 50-60 Hz

User configurable inputs for GPR, GPM, any 0-5 V or 4-20 mA sensor, or thermocouple (J,K,E,N,R,S,T)

External Reset input to reset Peak/Valley hold 24 VDC/50 mA excitation voltage

Environmental Rating:

GP Monitor Front Panel IP 54 (IEC 529); NEMA-12

GPR Sensing Head IP 65 (IEC 529); NEMA-4*

GPM Sensing Head IP 65 (IEC 529); NEMA-4

* GPR rated with adapter and compression fitting

Ambient Temperature Range:

GP Monitor 0 to 50°C (32 to 120°F)

GPR Sensing Head: 0 to 65°C (32 to 150°F)

With optional water cooling 0 to 177°C (32 to 350°F)

GPM Sensing Head: 0 to 85°C (32 to 185°F)

With optional air cooling 0 to 200°C (32 to 392°F) Storage Temperature -30 to 65°C (-22 to 150°F) Relative Humidity 10 to 95%, non-condensing GP Monitor Dimensions 1/8 DIN x 120 mm (1.75 x 3.63 x 4.75 in) GP Monitor Weight 320 g (0.7 lbs)

Electrical Specifications

• Cooling housings for high ambient conditions

• Air purge fittings for sensing heads

• Adjustable mounting brackets and adapters

• External isolated solid state relays for alarm outputs (10 Amp AC)

• 3A mechanical output relays

Raytek GP Series

Accessories / Options

General Specifications

Dimensions

Sensing Head—Optical Specifications

GPR Sensing Head

GPM Sensing Head

GPM Sensing Head Optical Chart

GPR Sensing Head Optical Charts

(NOTE: nominal spot size based on 90% energy)

Measurement Specifications (Monitor w/ Sensing Head)

Worldwide Headquarters Raytek Corporation

Santa Cruz, CA USA Tel: 1 831 458 1110 800 227 8074 (U.S. and Canada only) Fax: 1 831 458 1239 www.raytek.com

5710 Kenosha Street Richmond, Illinois 60071 USA Phone: +1 (815) 678-2211 FAX: +1 (815) 678-3961 Internet: www.watlow.com e-mail: info@watlow.com

RIC-GP-0401

For Sales and Ordering Contact:

For Service and W arranty Contact:

Your Authorized W at l ow Distributor Is:

preinstalled cable

standard cable length 1 m ( 3 ft.)

Ø 5 (0.2)

17 (.67)

28 (1.1)

M 12x1

Ø 14 (.55)

11 (.43)

mm (in)