The Miljoco-Weiss DVU6 is a light powered Vari-Angle digital thermometer with a 6 in. stem for thermowell mounting. It reads -50 to 300°F or -45 to 150°C on a switchable 1/2 in. LCD, needs no battery or supply wiring, and holds the greater of 1% of reading or one degree.
Overview
The Vari-Angle line was built to replace mercury-in-glass industrial thermometers without giving up accuracy or adding a power circuit. The head swings on an adjustable joint so the display faces the operator, the stem conforms to Fed Spec GG-T-321D and drops into existing wells, and the whole instrument runs on ambient light down to one foot candle.
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
Light powered, mercury free
The patented Vari-Angle design runs on ambient light down to 10 Lux, so there is no battery to fail and no supply to pull. It is a direct replacement for mercury-in-glass where environmental rules have caught up.
Adjustable viewing angle
The Vari-Angle joint swings the head so the display can be read from the walkway instead of from a ladder.
One range covers chilled, condenser and hot water
A single -50 to 300°F range covers chilled water, condenser water and hot water loops, so one part number serves all three applications.
Switchable °F and °C
The scale switches in the field, so the same instrument suits a Fahrenheit or Celsius job.
Zero ambient temperature error
The published ambient temperature error is zero across a -30 to 140°F ambient, so a hot mechanical room does not walk the reading.
Interchangeable with industrial glass
The stem is in full conformance with Fed Spec GG-T-321D and drops into existing industrial glass thermometer thermowells.
Technical Specifications
| Specification | Value |
|---|---|
| Stem Length | 6 in. |
| Stem Material | Precision die cast Zamac alloy with brass extension |
| 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 | Light powered, no batteries and no supply wiring |
| 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 |
Source Notes
Documentation
Related Products
Frequently Asked Questions
Does this thermometer need power or a battery?
No. It is light powered and needs 10 Lux, about one foot candle, of ambient light. There is no battery and no supply wiring.
Does it need a thermowell?
Yes. The stem is rated for thermowell connections only. The E Series thermowells are the factory option for the 6 in. stem.
What accuracy should I expect?
The greater of 1% of reading or one degree.
Can it read Celsius?
Yes. There is a °F / °C switch, and the single range covers -45 to 150°C.
Specifications from Miljoco-Weiss data sheet DVU-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:
- Digital Thermometer
- Display Type:
- LCD
- Temperature Range:
- -50 to 300 F
- Power Supply:
- Light Powered
- Stem Length:
- 6 in.
- Connection:
- Thermowell
- Sensor Type:
- Thermistor NTC
- Accuracy:
- 1 percent of reading or 1 degree
- Mounting:
- Adjustable Angle
- Application:
- Hydronic HVAC
