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Isotech
Isotech Isobox Model 842 Thermocouple Reference Unit
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Isotech Isobox 842: 0 °C reference; to 100 ch; ±0.1 °C/10° ambient; IP66. RFQ.
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Key parameters
Accuracy
±0.1 °C per 10 ° ambient span
Output
DC mV, 4–20 mA, or platinum resistance thermometer (order option)
Ambient temperature
−20 °C to +70 °C
Approvals
Power station use approved (OEM claim)
Referencing Temperature
Effectively 0 °C (compensation to reference)
Long Term Stability
±0.05 °C per 1000 hours
Fits multi-channel thermocouple cold-junction referencing where you need an Isotech Isobox Model 842—effectively 0 °C compensation reference with up to 100 double-junction channels, ±0.1 °C accuracy per 10° ambient span, ±0.05 °C/1000 h stability, and IP66 enclosure.
Key advantages
- Reference — Effectively 0 °C compensation
- Channels — 0 to 100 double-junction
- Accuracy — ±0.1 °C per 10° ambient span
- Stability — ±0.05 °C per 1000 hours
- Enclosure — IP66 weatherproof
Typical applications
- Plant TC reference panels.
- Outdoor CJC boxes.
- Multi-channel logging references.
Selection guide
- Channel count
- Output mV / 4–20 mA / PRT
- Gland plate
Common mistakes
- Exceeding ambient −20…+70 °C.
- Unequal junction loading.
- Skipping 10 min stabilisation.
When to RFQ / what to tell us
- Channels/output.
- Quantity, ship-to.
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Specs
| Spec | Value |
|---|---|
| SKU | 45109 |
| Brand | Isotech |
| Model | Isobox Model 842 |
| Product type | Thermocouple Reference Unit |
| Model | 842 Isobox |
| Referencing temperature | Effectively 0 °C (compensation to reference) |
| Accuracy | ±0.1 °C per 10 ° ambient span |
| Long term stability | ±0.05 °C per 1000 hours |
| Channel capacity | 0 to 100 channels, double-junction referencing |
| Output signal | DC mV, 4–20 mA, or platinum resistance thermometer (order option) |
| Enclosure | IP66 weatherproof with bottom gland plate; lockable hinged front door |
| Ambient temperature | −20 °C to +70 °C |
Documents
FAQ
Q: Channels? A: Up to 100 double-junction.
Q: Enclosure? A: IP66.
Q: What should I send for a quote? A: Channels/output, quantity, ship-to.
Links
| Parameter | Value |
|---|---|
| Accuracy | ±0.1 °C per 10 ° ambient span |
| Output | DC mV, 4–20 mA, or platinum resistance thermometer (order option) |
| Ambient temperature | −20 °C to +70 °C |
| Approvals | Power station use approved (OEM claim) |
| Referencing Temperature | Effectively 0 °C (compensation to reference) |
| Long Term Stability | ±0.05 °C per 1000 hours |
| Temperature Gradient | ±0.1 °C between junctions |
| Stabilisation Time | 10 minutes |
| Channel Capacity | 0 to 100 channels, double-junction referencing |
| Enclosure | IP66 weatherproof with bottom gland plate; lockable hinged front door |
| Power | 10 W typical; 100–130 or 208–240 VAC 50/60 Hz; passive/low-level DC option (~6 VA) |
| Dimensions | H 600 × W 600 × D 300 mm |
| Weight | 40 kg |
| Special Features | Ambient-following reservoir with electrical compensation for wide-ambient CJC |