This document introduces the features and performance of the ZT77 mini digital pressure gauge. The pressure gauge uses a semiconductor strain gauge and a dedicated hybrid IC, providing durability and stability. Its interface surface has a sub-micron level roughness, suppressing the generation of particles. The pressure gauge is equipped with a high-speed digital comparator and other functions. It has a display accuracy of ±1.0% F.S. and a temperature coefficient of ±0.1% F.S./℃. It can be operated through LED display and analog output. Additionally, it features a case made of UL94-V0 level modified polyphenylene ether resin and does not count particles larger than 0.1μm.
The ZT77 is a compact digital pressure gauge that uses a semiconductor strain‑gauge sensor and a high‑speed digital comparator. It offers fast response, multiple pressure ranges, and optional output configurations for process‑gas measurement.
The manual provides details on pressure ranges, accuracy, power requirements, connector types, cable specifications, and optional features such as analog 4‑20 mA output. Safety and environmental limits are also described. This manual is written in Japanese.
| Pressure range | 0‑300 kPa to 20 MPa (configurable) |
|---|---|
| Display accuracy | 1.0 % of full scale |
| Display type | 3‑digit LCD (character height 6 mm) |
| Display update period | ≈ 0.2 s |
| Power supply | 24 V DC, 35 mA max |
| Comparator output | Open‑collector, 30 V DC, 80 mA max |
| Analog output (optional) | 4‑20 mA DC |
| Operating temperature / humidity | -10 °C to 60 °C, 5‑80 % RH |
| Storage temperature | -20 °C to 70 °C |
The ZT77 can be configured for ranges from 0‑300 kPa up to 20 MPa.
It operates from a 24 V DC supply and draws up to 35 mA.
The display accuracy is 1.0 % of full scale.