AMiR 7838 Infrared Measuring Heads in Two-Wire Design
Type
 |
Technical Features:
● Compact,
robust and precise infrared measuring heads.
●
Wide range of versions for applications in
intelligent process control and monitoring systems, as well as in production
and test lab.
●
Low cost standard version with fixed set temperature and output current
range and emissivity can be manually set at the measuring head.
●
The standard version without programming
functions is ideally suitable for connecting to ALMEMO® devices.
●
Measuring heads also available as addressable
and remotely programmable versions. |
| Technical Data: |
| Accuracy: |
±1% of meas. value or ±1.4°C, the higher
value of either is always valid |
| Reproducibility: |
±0.5% of meas. value or ±0.7°C, the higher value
of either is always valid |
| Response time: |
165ms, at 7838 - 51(P) 100ms |
| Nominal temperature: |
+23°C, ±5°C |
| Temperature resolution: |
AMiR 7838 -10, -11: 0.125°C, AMiR 7838 -21, -31,
-41, -51: 1°C |
| Relative humidity: |
10 to 95%, non-condensing, at 30°C max. |
| Power supply: |
12-24VDC, for AMiR 7838xxP: 24VDC |
| Output signal: |
4 … 20mA linear, two-wire technology |
| Emissivity: |
0.10 to 1.00 manually adjustable at measuring head
(only noprogrammable heads) |
| Operating temperature: |
without cooling: 0 to 70°C, with air cooling: 0 to
120°C
with water cooling: 0 to 175°C, with protective housing: 0 to 315°C |
| Protection system: |
IP 65, (IEC 529) |
| Shock: |
IEC 68-2-27 (MIL STD 810D), 50G, each axis, 11ms |
| Vibration: |
IEC 68-2-6 (MIL STD 810D), 3G, each axis, 11 to 200Hz |
| Dimensions: |
without water cooling housing: 187mm long, Ø 42mm
with water cooling housing: 187mm long, Ø 60mm |
| Weight: |
without water cooling housing: 330 g
with water cooling housing: 595 g |
| Device Functions: |
| only AMiR 7838-xxP (programmable
AMiR Heads) |
| Programming: |
through PC via HART® adapter (OR7838SH) |
| Emissivity: |
0.10 to 1.00 programmable |
| Data functions: |
max, min, average value hold, compensation of ambience
radiation |
| Limit value programming: |
1 limit value incl. hysteresis, also usable for monitoring
the temperature of the measuring head |
| ALMEMO® application: |
For the measuring head versions, which cannot be
addressed and remotely programmed, we recommend, for acquisition and
storing the measured values, our panel meters ALMEMO® 4490-2 and the
transmitter ALMEMO® 8990-1 with one measuring input. For several measuring
heads our desktop data loggers ALMEMO® 3290-8 are suitable. |
| Types (incl. rigid mounting angle
and fastening screw): |
| MR783810(P) |
For universal applications, standard
optics OR7838OS1 (Fresnel Lens)
Meas. range -18 to 500°C, spectral range 8 to 14 μm, response time
165ms, optical resolution 15:1 |
| MR783811(P) |
For universal applications, standard optics OR7838OS3
(Amtir Lens)
Meas. range -18 to 500°C, spectral range 8 to 14 μm, response time
165ms, optical resolution 33:1 |
| MR783821(P) |
For high temperature measurements in metal finishing
and in rotary tubular kilns,
standard optics OR7838OS3 (Sapphire Lens)
Meas. range 200 to 1000°C, spectral range 3.9 μm, response time 165ms,
optical resolution 33:1 |
| MR783851(P) |
For maximum temperature measurements in metal finishing,
standard optics OR7838OS6 (Float Glass Lens)
Meas. range 500 to 2000°C, spectral range 2.2 μm, response time 100ms,
optical resolution 60:1 |
| MR783831(P) |
For high temperature measurements in glass production
and at heating up and hardening,
standard optics OR7838OS3 (Calcium Fluoride Lens)
Meas. range 250 to 1650°C, spectral range 5.0 μm, response time 165ms,
optical resolution 33:1 |
| MR783841(P) |
For low temperature measurements in the production
of plastic foils and normal foils,
standard optics OR7838OS3 (Calcium Fluoride Lens)
Meas. range 10 to 360°C, spectral range 7.9 μm, response time 165ms,
optical resolution 33:1 |
| (P) Measuring heads remotely
programmable |
|
| Options: |
| OR7838IS |
Inherent safety (Eex in IIC T4), only
available with programmable meas. heads without cooling jacket |
| OR7838KL |
Water/air cooling housing including air blow attachment,
factory mounted |
| OR7838ZB |
Zener barrier including current supply |
| OR7800KZ1 |
Factory test certificate, based on DKD/NIST certified
sensors
(only with delivery of new devices) |
| Accessories: |
| ZR7838SF |
for programmable measuring heads MR7838xP
Protective window, snap-on, according to above lens detail |
| OR7838SH |
Remote control set incl. HART adapter and software |
| ZR7838NT |
Industrial mains adapter 110/220V - 24VDC |
|
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