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Brand: JUMO
JUMO 902520 Indoor, Outdoor, Wall and Channel RTD Temperature Probes for HVAC
Description
Plastic-housed room, wall, outdoor and duct sensors for air conditioning
The JUMO 902520 data sheet covers a family of indoor, outdoor, wall and channel RTD temperature probes for air-conditioning technology, used mainly for temperature measurement in rooms, in air channels and outdoors. Temperatures from -50 to +200 degC are covered, the housings are plastic, and protection types run from IP20 to IP65. Connection is available in two-wire, three-wire or four-wire circuit, and an analog transmitter can be integrated as an option.
The standard measuring insert is a Pt100 to DIN EN 60751 class B in two-wire circuit. Pt500, Pt1000, Ni1000, KTY 81-110, LM235 Z and several NTC elements are also listed. The sheet is organised in three groups: indoor and outdoor probes (902520/10 at IP20, /11 at IP54 and /15 at IP65), wall probes with an internal sensor, an outer sensor, a stepped-down tube or a push-in probe on 2500 mm PVC cable (902520/21 to /24, all IP65), and the plug-in channel probe 902524/25 with a smooth 6 mm protection tube at IP54, plus related 902524/31 and /32 types.
Technical specifications
| Parameter | Specification |
|---|---|
| Basic types, indoor / outdoor | 902520/10 IP20; /11 IP54; /15 IP65 |
| Basic types, wall | 902520/21 internal sensor; /22 outer sensor; /23 stepped tube; /24 push-in probe on 2500 mm PVC cable; all IP65 |
| Basic type, channel | 902524/25 plug-in, smooth tube, IP54 (IP65 with extra code 404); also 902524/31, /32 |
| Temperature range | -50 to +200 degC overall; indoor -50 to +90 degC (361), -30 to +80 degC (572), -20 to +80 degC (635); channel -50 to +200 degC (380) |
| Measuring insert | Pt100 2-wire (1003), 3-wire (1001), Pt1000 (1005), Ni1000 (1009), KTY 81-110 (1619), NTC 1 kOhm (1728), LM235 Z (1654), double elements |
| Tolerance class | B (standard), A, AA (Pt elements); 0 for Ni/NTC/KTY technical data |
| Protection tube (channel) | Stainless steel 1.4571, diameter 6 mm; nominal length 50 to 500 mm (100, 150, 200 mm listed) |
| Housing | Plastic PC; basic type 902520/11 material PP; cable socket versions |
| Transmitter 4 to 20 mA | Pt100 input; supply 7.5 to 30 V DC; accuracy 0.1 %; settling 10 ms or less |
| Transmitter 0 to 10 V | Pt100 input; supply 15 to 30 V DC; load 10 kohm or more; accuracy 0.2 % |
| Calibration accuracy (transmitter) | Max. 0.2 % or 0.2 K; overall typically +/-0.4 K at 20 degC |
| Transmitter ambient | Operating -40 to +85 degC; storage -40 to +100 degC; humidity 95 % annual average |
| Fault signals | 4 to 20 mA: 3.6 mA or less underrange; 22 to 28 mA overrange (typically 24 mA) |
| Special options | SIL and PL compatible (058); cable fitting IP65 (903); spring-cage terminal (242); stepped tube (310) |
Selecting an HVAC probe type and decoding the order code
Order codes are short: basic type – operating temperature – measuring insert – tolerance class / extra codes, for example 902520/10 – 572 – 1001 – 1 / 000 for an indoor probe, 902520/21 – 573 – 1003 – 1 / 000 for a wall probe, and 902524/25 – 380 – 1003 – 1 – 6 – 100 – 000 / 000 for a duct probe with 100 mm nominal length. Choose the housing by environment: IP20 is for dry occupied rooms, IP54 suits damp indoor and covered outdoor use, and IP65 is used for outdoor and wall-mounted positions exposed to spray. Operating ranges 803 (0 to 40 degC) and 807 (0 to 60 degC) apply only in conjunction with a transmitter.
| Extra code | Meaning |
|---|---|
| 058 | SIL and PL-compatible |
| 242 | Spring-cage terminal (wall probes) |
| 330 | 1 x analog transmitter 4 to 20 mA (with 1 x Pt100), data sheet 707030 |
| 333 | 1 x analog transmitter 0 to 10 V (with 1 x Pt100) |
| 903 | Cable fitting IP65 (indoor/outdoor types) |
| 310 / 404 | Stepped tube 6 to 3.3 mm / IP65 (channel type) |
The measuring range of an integrated transmitter is specified in plain text at order. Process connections for the channel probe are described in the accessories section of the datasheet.
Placement, signal choice and wiring notes
Mount room sensors on an inside wall away from sunlight, supply air jets and heat sources, and locate duct sensors where the air stream is well mixed. Outdoor sensors should be shaded from direct sun. A 2-wire Pt100 includes the resistance of its cable in the reading, so a transmitter or 3-wire connection is advisable for long runs; the integrated transmitters give a linear 4 to 20 mA or 0 to 10 V output that building management controllers read directly.
With a transmitter the 4 to 20 mA output needs a supply of 7.5 to 30 V DC with burden RB = (Ub – 7.5 V) / 22 mA, while the 0 to 10 V output needs 15 to 30 V DC. In a hot climate, specify the range up to +90 degC or more for roof-level and plant-room measurements, and use class A elements where energy metering or balancing depends on small temperature differences. These probes complement the frost, thermostat and indicator devices for air-handling units listed elsewhere on this site.
Documents and quotation
The JUMO data sheet 902520 is attached for download. Seven Star LLC supplies JUMO sensors from Muscat; give us the basic type, element, range, transmitter option and quantity for a quotation. More temperature probes are listed under https://omansevenstar.com/product-category/sensors-transmitters/temperature/.
Datasheets & Documents
- Datasheet JUMO data sheet 902520 (indoor, outdoor, wall and channel RTD probes) Download
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About brand
Temperature measurement is the origin of JUMO, founded in 1948 in Fulda, Germany, as a maker of glass thermometers. Today the catalog covers sensors and transmitters for temperature, pressure, level and liquid analysis, plus controllers and recorders. Seven Star LLC lists JUMO RTD probes, pressure and differential pressure transmitters, pH, conductivity, turbidity and dissolved oxygen instruments, and sources them for plants in Oman.
JUMO product families listed
JUMO uses family names that recur across the catalog:
- dTRANS: transmitters, including dTRANS T01 and T100 for temperature, dTRANS p02 DELTA for differential pressure, and dTRANS pH 02 and CR 02 for liquid analysis
- Wtrans: wireless probes and transmitters, such as Wtrans T for RTD temperature and Wtrans p for pressure
- digiLine and ecoLine: digital and optical analysis sensors, for example the digiLine O-DO S10 dissolved oxygen sensor and the ecoLine NTU turbidity sensor
- NESOS: float-based level transmitters and switches
- RTD temperature probes: screw-in types such as 902030 and mineral-insulated designs
Where JUMO sensors are used
JUMO sensors and transmitters are typical of food and beverage lines, water and wastewater treatment, pharmaceutical utilities, heating and cooling systems, and packaged machinery supplied to the GCC by European builders. Many requests are for a like-for-like replacement of a probe fitted by the machine maker, where length, thread and connector have to match exactly.
Ordering JUMO parts: what we need
JUMO identifies each product group by a six-digit type number, such as 902030, followed by an order code that fixes the options. The label of the delivered item normally carries a part number as well. Send whichever you have, ideally both, or a photo of the label. For JUMO temperature probes add insertion length, diameter, process connection, sensor type and wiring. For JUMO pressure sensors state range, output, process connection and electrical connector. For analysis sensors name the transmitter they connect to and the cable length.
Browse JUMO products by category: Temperature Instrumentation, Pressure Instrumentation, Liquid Analysis Sensors, Controllers & Data Acquisition, Level Transmitter.
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Frequently Asked Questions
What is the temperature range?
Overall -50 to +200 degC, with each housing type offering its own ranges, such as -50 to +90 degC for indoor probes and -50 to +200 degC for the channel probe.
What protection types are offered?
IP20, IP54 and IP65 depending on the basic type.
Can a transmitter be integrated?
Yes, extra codes 330 and 333 add a 4 to 20 mA or 0 to 10 V analog transmitter to Pt100 versions.
Which sensor elements are possible?
Pt100, Pt1000, Ni1000, KTY 81-110, LM235 Z and NTC 1 kOhm, depending on type.
What tube is used for duct measurement?
A stainless steel 1.4571 tube of 6 mm diameter with nominal length 50 to 500 mm on the 902524/25 type.
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