The Miljoco-Weiss DVUT35 is a light powered Vari-Angle self-indicating temperature transmitter with a 3-1/2 in. thermowell stem. It shows -50 to 300°F locally on a switchable LCD and transmits the same measurement as a loop powered 4-20 mA signal to a building automation system.
Overview
The DVUT combines the patented mercury free Vari-Angle solar thermometer with a loop powered 4 to 20 mA transmitter in one body. Dual sensors run independently, so the local reading and the transmitted signal do not share a failure point, and the whole assembly needs only one thermowell.
Typical Applications
- Commercial and institutional HVAC systems
- Hot and chilled water applications
- Glycol systems
- Boilers
- Air ducts
Warranty
Miljoco-Weiss warrants this product to be free from material defects in material and workmanship for 12 months from date of shipment, per the published Miljoco-Weiss terms and conditions of sale. No product-specific warranty period is published in the documentation for this model, so the standard term applies.
Key Features
Local display and 4-20 mA output in one body
The first self-indicating light powered temperature transmitter. The gauge reads locally while the loop reports to the building automation system, from a single thermowell.
Dual independent sensors
A glass passivated NTC thermistor drives the local display and a Platinum 100 ohm RTD drives the transmitter, so a failure on one side does not take out the other.
One thermowell, two functions
Replacing a separate gauge and well-mounted transmitter with one instrument saves a tapping, a well and the labor to install both.
Compatible with most building automation systems
Standard 4-20 mA loop output into any BAS analog input, with a 775 ohm maximum load on a 24 VDC supply.
Light powered local display
The indicating side needs 10 Lux of ambient light, not a supply, so the local reading survives a loop power problem.
Switchable °F and °C
The local scale switches in the field across the full -50 to 300°F range.
Technical Specifications
| Specification | Value |
|---|---|
| Stem Length | 3-1/2 in. |
| Stem Material | Precision die cast Zamac alloy |
| Measurement Range | -50 to 300°F (-45 to 150°C), with °F / °C switch |
| Accuracy | Greater of 1% of reading or 1 degree |
| Resolution | 1/10° between -19.9 and 199.9°F |
| Display | 1/2 in. LCD digits, wide ambient formula |
| Power | Local display: light powered, 10 Lux minimum. Transmitter: loop powered, 8 to 35 VDC. The instrument has two independent power systems. |
| Lux Rating | 10 Lux (one foot candle) |
| Update Time | 10 seconds |
| Sensor | Glass passivated thermistor, NTC |
| Recalibration | Through case potentiometer adjustment |
| Ambient Operating Temperature | -30 to 140°F (-35 to 60°C) |
| Ambient Temperature Error | Zero |
| Operating Humidity | 100% |
| Stem Conformance | Full conformance with Fed Spec GG-T-321D; fully interchangeable with industrial glass thermometers |
| Adjustable Joint and Connecting Thread | Hi-impact ABS |
| Connection | For thermowell connections only |
| Transmitter Output | 4-20 mA |
| Transmitter Supply | 8 to 35 VDC (see the source note below) |
| Maximum Load Resistance | 775 ohms with a 24 VDC supply |
| Transmitter Accuracy | 0.1% of span |
| Transmitter Ambient | -15 to 185°F (-25 to 85°C) |
| Transmitter Ambient Error | 0.01% of span (°C) |
| Transmitter Sensor | Platinum 100 ohm RTD |
| Case Material | Hi-impact ABS |
Source Notes
Documentation
Frequently Asked Questions
What supply does the transmitter need?
The specification block states 8 to 35 VDC and the wiring diagram on the same data sheet states 8.5 to 35 VDC. Size the loop supply to 8.5 VDC and it satisfies both. See the source note below.
What is the maximum loop load?
775 ohms on a 24 VDC supply.
Does the local display need power?
No. The indicating side is light powered and needs about 10 Lux, one foot candle.
How do I scale the 4-20 mA input at the BAS?
The loop table on the data sheet scales 4 mA to -58°F and 20 mA to +302°F, which does not match the stated -50 to 300°F range. Scale from the loop table and confirm the endpoints with the factory. See the source note below.
Specifications from Miljoco-Weiss data sheet DVUT-01.24. Verified 2026-09-01.
Manufacturer Warranty
Miljoco-Weiss warrants this product to be free from material defects in material and workmanship for 12 months from date of shipment, per the published Miljoco-Weiss terms and conditions of sale.
Warranty service requires written notice of the defect within seven days of discovery. Remedy is repair, replacement or credit at the manufacturer's discretion. Normal wear, corrosion, misuse and unauthorized modification are excluded.
- Product Type:
- Temperature Transmitter
- Display Type:
- LCD
- Temperature Range:
- -50 to 300 F
- Output Signal:
- 4-20 mA
- Power Supply:
- Loop Powered 8 to 35 VDC
- Stem Length:
- 3-1/2 in.
- Connection:
- Thermowell
- Sensor Type:
- Platinum 100 ohm RTD
- Accuracy:
- 0.1 percent of span
- Application:
- Building Automation
