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PANEL-MOUNT
DIGITAL TEMPERATURE INDICATOR
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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.
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.
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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.
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Model
500 General Specifications
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Repeatability:
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11
Count |
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Stability
with Temperature:
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Zero,
1uV/°C; Span, 0.01%rdg/°C; Thermocouple Reference
Junction, internal, automatic, 0.03°C/°C, 5°
to 45 °C |
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Break
Detection:
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upscale,
approx. 50nA |
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Stability
with Time:
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1°/year |
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Noise
Rejection:
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NMRR,
60dB @50/60Hz, +/-0.1Hz; CMRR,
120 dB @ 50/60Hz, +/-0.1Hz with
250 ohm unbalance |
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Overload
Protection:
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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- |
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Input
Impedance, Thermocouple:
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20M-Ohms,
exclusive of break detect current effects |
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Input
Impedance, RTD:
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16.9k-Ohms,
V+ input; 16.9k-Ohms, I input |
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RTD
Leadwire Error:
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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 |
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Point
Update Rate:
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2
per second nominal, 1° readings; 1 per second nominal,
0.1° readings |
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Display:
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7-segment
red/orange LED, 0.56"H (14.2mm) |
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Environmental
Ranges:
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operating,
5° to 45°C; storage, -40° to +65°C;
humidity, </+80%RH non-condensing |
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Multi-Input
Option Accuracy:
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add
+/-0.5°C/+/-1°F
to instrument accuracy specification |
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Alarm
Relay Contact Rating:
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0.5A
@ 120VAC (non-inductive load) Form C |
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Case
Construction:
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one
piece black plastic |
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Installation:
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secured
to panel by U-channel bracket supplied with indicator
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Size:
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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) |
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Weight:
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1
lb. (454 grams) |
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Power:
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115/230
VAC +/-10%, 50-60Hz |
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Warranty:
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1
year |
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Model
500 Ordering Guide
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Base
Model
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Base
Configuration
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Model
500
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500
Meter, 115/230 VAC power, Type K, °F |
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-ALM
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Alarm
Option |
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-206
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6
Channel Selector |
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-RSK
1 cutout
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19"
Rack Adapter for 1 Indicator |
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-RSK
2 cutouts
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19"
Rack Adapter for 2 Indicators |
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-RSK
3 cutouts
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19"
Rack Adapter for 3 Indicators |
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-RSK
4 cutouts
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19"
Rack Adapter for 4 Indicators |
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- 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
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- 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
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- 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
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If
you have any questions regarding Marlin Instruments,
Please call us at 1-800-321-6648 or e-mail us at marlincle@marlinmfg.com
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