NOSHOK 820 / 821 digital temperature indicator-transmitter, Pt100 Class A, 4-digit LED, 4–20 mA, 316 SS
Pricing depends on specification, quantity and delivery location. Send your requirement and we reply with a costed quotation within 24 hours.
Quick overview
- Type: Temperature
- Signal / Protocol: 4–20 mA, Relay / switch
- Hazardous area: General purpose
- Genuine productsSourced from the manufacturer or authorised channels
- Delivery across BangladeshDhaka, Chattogram and all industrial zones
- After-sales supportInstallation guidance and warranty handling
- Reply within 24 hoursCall +880 1713 552466 or email hello@argonmark.com
Specifications
| General | |
|---|---|
| Part no. | BD-1581 |
| Category | Oil & Gas Instruments |
| Group | Instrumentation & Control |
| Brand | NOSHOK |
| Model | 820 (bottom) / 821 (back connection) |
| Technical | |
| Type | Temperature |
| Signal / Protocol | 4–20 mA, Relay / switch |
| Hazardous area | General purpose |
Datasheet
Technical features
| Electronic replacement for bimetal, liquid-filled and glass thermometers with a large 4-digit LED display | |
| Linearized 4–20 mA output plus optional programmable switch (relay SPDT or transistor) | |
| Self-calibration for stable performance; open-circuit detection (upscale or downscale) | |
| Field re-programmable with optional PC interface and software, with security lock | |
| All 316 stainless steel; many stem lengths and diameters; M12 or cable connection |
Applications
| Replacing dial and glass thermometers with local display plus 4–20 mA | |
| Pharmaceutical, food and utilities | |
| Chemical, petrochemical, paper mills and hydraulics |
Key specifications
| Sensor | Pt100 RTD, IEC 60751 Class A |
|---|---|
| Range | Standard ranges −45 to 204 °C (−50 to 400 °F); rescalable −200 to 600 °C |
| Accuracy | ≤ 0.22% FS (≤ 0.1% FS optional) |
| Output | 4–20 mA 3-wire; optional relay or NPN/PNP switch |
| Supply | 9–36 V DC |
| Construction | 316 SS housing and probe, IP65 / NEMA 4 |
Specification
| Sensor | Pt100, DIN EN 60751 Class A |
|---|---|
| Standard ranges | −50/120, −50/300, −50/400, 32/120, 32/200, 32/300, 32/400 °F (rescalable −200 to 600 °C) |
| Accuracy | ≤ 0.22% FS; ≤ 0.1% FS optional |
| Output | 4–20 mA 3-wire, linear to temperature; max. load (U − 9 V) / 20 mA |
| Switch output (option) | Relay SPDT 0.5 A at 240 V AC, or NPN/PNP transistor 100 mA; N.C./N.O. selectable; hysteresis 1% (programmable) |
| Supply | 9–36 V DC, polarity protected |
| Isolation | 500 V DC probe to output |
| Response time | 0.5 to 30 s (selectable) |
| Display | 4-digit LED; resolution ±0.02% FS ±1 digit |
| Ambient | −40 to 80 °C; effect < 0.01% FS/°C |
| Max. pressure on probe | 500 psig (34 bar); thermowell recommended |
| Process connection | ¼ or ½ NPT male, or ½ NPT sliding compression fitting |
| Stem | 64–610 mm long; ¼, ⅜, ½ in or 6 mm diameter |
| Electrical | M12 × 1 5-pin or 0.9 m integral cable |
| Protection | IP65 / NEMA 4; 316 SS |
Notes
| Data from the manufacturer's published datasheet. Confirm model, range, materials and approvals with Argonmark before ordering. |
Photo: courtesy of NOSHOK, used with permission (source) — background removed by Argonmark. All photo credits
Description
The NOSHOK 820 and 821 are digital temperature indicators with a built-in Pt100 Class A sensor, a large 4-digit LED display and a linearized 4–20 mA output, designed to replace bimetal, liquid-filled and glass thermometers. Accuracy is ≤ 0.22% FS (≤ 0.1% FS optional), and the range can be re-programmed between −200 and 600 °C with the optional PC interface.
An optional relay or transistor switch output provides alarms or control. The housing and probe are 316 stainless steel, rated IP65, with bottom (820) or back (821) connection and a choice of stem lengths, diameters and process threads.
Argonmark Ltd supplies NOSHOK instruments across Bangladesh — Dhaka, Chattogram, Gazipur, Narayanganj and the gas fields, refineries, terminals and power plants beyond. Send us the model, range, process connection, output and any hazardous-area requirement, and we will confirm the right configuration, lead time and price.
Questions & answers
Customer questions
No questions asked yet. Ask about specification, compatibility, lead time or anything else about this item.
Reviews
No reviews yet. Bought or used this item? Be the first to share your experience.
-
Pressure transmitter, 4-20mA/HART, gauge/absolute
Price on request
-
Differential pressure (DP) transmitter
Price on request
-
Pressure gauge, bourdon, SS, 63/100/150mm dial
Price on request
-
Pressure switch, adjustable
Price on request
-
Temperature transmitter, RTD/TC input, HART
Price on request
-
RTD sensor Pt100, with thermowell
Price on request