UNI-T UT336E Digital Manifold Gauge
The UNI-T UT336E Digital Manifold Gauge (also called AC Diagnoser) facilitates the installation, debugging and maintenance of refrigeration and heat pump systems. It accurately measures high- and low-side pressures.
The device combines a 3.5-inch TFT color screen with an analog-dial style UI for clear measurement display and status indication. Evaporation and condensation (saturation) temperatures are automatically calculated from the built-in refrigerant database at the current pressures, while T1/T2 surface temperatures are measured by the wireless clamps (SH = T1 − EV; SC = CO − T2).
Four measurement modes cover the entire repair workflow: Refrigeration, Evacuation, Pressure Test and Delta T. In Pressure Test mode the device records the initial pressure and the scale turns yellow if the system leaks. In Evacuation mode it displays operation time and vacuum percentage.
With built-in parameters for 162 refrigerants (updatable via mobile app), A2L refrigerant compatibility, audible/visual alarms, temperature compensation for pressure-holding tests, and wireless remote monitoring via the iENV mobile app (real-time data viewing and report export), the UT336E is a complete diagnostic solution for HVAC/R technicians. Its IP54 housing, 2 m drop protection, metal hanging hook and rechargeable 5200 mAh lithium battery with Type-C charging make it suitable for harsh field environments.
Features
- 3.5-inch TFT color screen with analog dial design, attractive UI, and tap-to-wake backlight
- 4 test modes: Refrigeration, Evacuation, Pressure Test, Delta T
- Supports 162+ refrigerant types — built-in database of 160+ refrigerants (162 cataloged) with mobile app updates; app can preset 10 common refrigerant types for even faster switching
- Automatic superheat (SH) / subcooling (SC) calculation from evaporation and condensation temperatures at current pressures (with UT320i clamps)
- iENV mobile app (iOS & Android) for real-time data viewing and report exporting
- Audible & visual alarm: yellow LED/buzzer alerts when thresholds are exceeded; alarm threshold can be set
- Large storage capacity: up to 10,000 records with settable record interval
- Rechargeable lithium battery: 3.7V 5200mAh, Type-C direct charging, >30 h battery life
- Temperature compensation for pressure holding (leak detection) mode
- Auto screen off (1/5/10 min, settable/cancelable) with tap-to-wake; auto power off (15/30 min, settable/cancelable)
- Unit memory: remembers your last unit selection at startup
- OTA upgrade support
- Multi-language interface: EN, FR, DE, IT, ES, SV, PL, CZ, CN
Specifications
| Pressure & Temperature Measurement | |
| Pressure Range | -1.00 ~ +60.00 bar -100 ~ +6000 kPa -0.100 ~ +6.000 MPa -14.5 ~ +870.2 psi -1.02 ~ +61.18 kg/cm² -75.0 to 4500 cmHg -29.5 to 1771 inHg |
| Pressure Resolution | 0.01 bar / 1 kPa / 0.001 MPa / 0.1 psi / 0.01 kg/cm² / 0.1 cmHg / 0.1 inHg |
| Pressure Accuracy | ±0.5% FS |
| Temperature Range (UT320i) | -50 ~ 150℃ / -58 ~ 302℉ |
| Temperature Resolution (UT320i) | 0.1℃ / 0.1℉ |
| Temperature Accuracy (UT320i) | ±0.5℃ (-50 ~ 80℃), ±1℃ for other ranges |
| Pressure Units | bar, kPa, MPa, psi, kg/cm², cmHg, inHg |
| Temperature Units | ℃, ℉ |
| Unit Memory | Remembers the last unit selection at startup |
| Display & Alarm | |
| Display | 3.5-inch TFT color screen, analog dial design |
| Alarm | Yellow LED / buzzer alarm; alarm threshold can be set |
| Functions & Modes | |
| Measurement Modes | Refrigeration, Evacuation, Pressure Test, Delta T |
| Refrigerant Types | 162 built-in; mobile APP can preset 10 common refrigerant types |
| High/Low-Pressure Measurement | Yes |
| Evaporation & Condensation Temperature | Yes |
| Superheat / Subcooling | Yes (automatically calculated with UT320i wireless temperature clamp) |
| Pressure Zeroing | Yes |
| Refrigeration / Heat Pump Mode | Yes |
| Data Record | Maximum 10,000 records; record interval can be set |
| Temperature Compensation | Supported; suitable for pressure holding mode (compensates for temperature changes on the pressure sensor) |
| Auto Screen Off | 1 / 5 / 10 minutes (settable or cancelable); supports tap-to-wake |
| Auto Power Off | After 15 or 30 minutes of no operation (settable or cancelable) |
| Wireless & Connectivity | |
| Multi-Device Connection | Two UT320i clamps + one UT336V wireless vacuum gauge + mobile app simultaneously |
| Wireless Range | Up to 100 m in open spaces |
| Mobile App | iENV (App Store for iOS / Google Play for Android) |
| OTA Upgrade | Supported |
| Language Setting | EN, FR, DE, IT, ES, SV, PL, CZ, CN |
| Protection & Environment | |
| IP Rating | UT336E: IP54 |
| Drop Protection | 2 m |
| Working Temperature & Humidity | -20 ~ 50℃, <90% RH (non-condensing) |
| Storage Temperature & Humidity | -20 ~ 60℃, <90% RH (non-condensing) |
| Altitude | ≤ 2000 m |
| EMC Standard | EN 61326-1:2021 (Class A) |
| Power | |
| Battery | Built-in rechargeable lithium battery: 3.7V 5200mAh |
| Charging Voltage | 5V 2A (Type-C / USB-C) |
| Charge Time & LED Indication | About 4.5 hours; red LED = charging, solid green = fully charged |
| Battery Life | > 30 hours (backlight 50%, wireless connection OFF) |
| Physical | |
| Size | UT336E: 203 × 117 × 70 mm |
| Weight | UT336E: ~836 g |
| Hose Connections | High/Low-pressure ports: 1/4 SAE (blue hose = low pressure/left, red hose = high pressure/right); refrigerant charging/vacuuming port: 1/4 SAE (yellow hose) |
| Standard Quantity Per Carton | 1 pc |
Applications
- Commercial & residential air conditioning systems
- Automobile AC maintenance
- Pipeline pressure measurement and testing
- Industrial refrigeration
- Leak detection of refrigeration systems (pressure holding method)
- Refrigerant charging and evacuation monitoring
- Installation, debugging, troubleshooting and maintenance of refrigeration and heat pump systems
Package Contents
- 1 x UT336E Digital Manifold Gauge
- 1 x User Manual
- 1 x Safety Guide
- 1 x USB-C Charging Cable
- 1 x Tool Box
