Temperature Instrumentation for Research and Industry

Products

Instruments - Digital Indicators-Model 500-High Quality, Small Size, 1/8 DIN

The Model 500 is designed for a variety of temperature measuring applications. Excellent accuracy and its small size combine to make it the ideal choice for most industrial temperature indications.

The 500 features a unique 0.1° or 1° automatic resolution. For temperature measurements below 1000°, the instrument displays to a 0.1° resolution. Crossing over 1000°, the instrument automatically switches to a 1° resolution. Thermocouple types R, S and B only display in 1° increments. For any application where a 1° resolution is desired for everything, the unit can be set to display only 1° increments throughout its measuring range.

 model 500

For ease of installation, each instrument is supplied in a standard 1/8 DIN (48 mm x 96 mm) plastic case and has rear-accessible universal screw terminals. Large LEDs make temperature readings easy to see and read, even from a distance. Power is derived from 115 or 230 VAC. Power is selectable via an internal slide switch.

Select between nine temperature sensors of thermocouple types J, K, T, E, R, S and B or 100 Ohm 3-wire, Platinum RTDs, either 0.00385 or 0.00392 alpha. Each of these nine are selected via a miniature rotary switch located directly behind the snap-off front lens. Another miniature DIP switch, also behind the lens, selects between °F or °C display.

Model 500 Options:
The Model 500 accommodates one of two avaailable options. Either option can be specified at time of initial order or can be easily installed at some future date.
Model 500 General Specifications
Repeatability:
 11 Count
Stability with Temperature:
 Zero, 1uV/°C; Span, 0.01%rdg/°C; Thermocouple Reference Junction, internal, automatic, 0.03°C/°C, 5° to 45 °C
Break Detection:
 upscale, approx. 50nA
Stability with Time:
 1°/year
Noise Rejection:
 NMRR, 60dB @50/60Hz, +/-0.1Hz; CMRR, 120 dB @ 50/60Hz, +/-0.1Hz with 250 ohm unbalance
Overload Protection:
 power lead to ground, 1500 VDC or VAC RMS; across inputs, thermocouple model, T/C up to 250 VDC or VAC for 1 minute, V+ to V-; RTD up to 62 VDC or VAC for 1 minute, V+ to I-
Input Impedance, Thermocouple:
 20M-Ohms, exclusive of break detect current effects
Input Impedance, RTD:
 16.9k-Ohms, V+ input; 16.9k-Ohms, I input
RTD Leadwire Error:
 at 150 uA excitation current; 40 milliohms per ohm of equal resistance in V+ and V- leads, 1 Ohm per ohm of unbalance in V+ and V- leads
Point Update Rate:
 2 per second nominal, 1° readings; 1 per second nominal, 0.1° readings
Display:
 7-segment red/orange LED, 0.56"H (14.2mm)
Environmental Ranges:
 operating, 5° to 45°C; storage, -40° to +65°C; humidity, </+80%RH non-condensing
Multi-Input Option Accuracy:
 add +/-0.5°C/+/-1°F to instrument accuracy specification
Alarm Relay Contact Rating:
 0.5A @ 120VAC (non-inductive load) Form C
Case Construction:
 one piece black plastic
Installation:
 secured to panel by U-channel bracket supplied with indicator
Size:
 case, 1.57"H x 3.54"W x 5.35"D (40mm x 90 mm x 136mm); bezel 1.89"H x 3.78"W (48mm x 96mm); panel cutout, 1.77"H x 3.62"W (45mm x 92mm)
Weight:
 1 lb. (454 grams)
Power:
 115/230 VAC +/-10%, 50-60Hz
Warranty:
 1 year
 
 
Model 500 Ordering Guide
Base Model
Base Configuration
Model 500
 500 Meter, 115/230 VAC power, Type K, °F
-ALM
 Alarm Option
-206
 6 Channel Selector
-RSK 1 cutout
 19" Rack Adapter for 1 Indicator
-RSK 2 cutouts
 19" Rack Adapter for 2 Indicators
-RSK 3 cutouts
 19" Rack Adapter for 3 Indicators
-RSK 4 cutouts
 19" Rack Adapter for 4 Indicators
   
   
   
  • Alarm Setpoint:
    • The alarm option provides a single limit setpoint that can be set to any point, + or -, within the 500 measuring range. The user digitally sets the setpoint via two buttons located on the front panel.
    • Selection of "HIGH" or "LOW" Alarm is set via a jump-jack located on the option card. Once the setpoint is set, it may be reviewed for its actual value by depressing the "view" button. A front panel LED illuminates when the alarm trips.
    • The Alarm Setpoint option card also includes a Form C, 0.5A relay for hook-up to external lamps, buzzers or on/off control elements. Relay terminals are accessible at the rear of the instrument and provide hook-up for Normally Open or Normally Closed Operation.
  • Order Option: Model 500-ALM
  • Multiple Inputs :
    • The cost of measuring multiple temperature sensors can be cut using the 500's ability to switch between up to six sensor inputs with its multi-input option. All input types contained in the 500 (thermocouple or RTD) can be switched, but they must all be of the same type (e.g., Type K Thermocouple).
    • A miniature rotary switch, accessible at the front lens, allows convenient switching between inputs. Sensor hook-up is to a snap-on/off terminal block located at the rear of the instrument.
  • Order Option: Model 500-206
  • Model 500 Accessories:
    • The Rack Adapter Plate permits easy mounting of Model 500 Indicators in standard 19" instrument racks. Four versions are available for mounting 1, 2, 3 or 4 indicators.
  • Order Accessory:
    • RKS1 for 1 cutout
    • RKS2 for 2 cutouts
    • RKS3 for 3 cutouts
    • RKS4 for 4 cutouts