# Sensor for ambient temperature, relative humidity and dew point — EXT-ENV-SENS

> Environmental sensor for ambient temperature, relative humidity and dew point, used with reader AMS01 for condition monitoring in medium-voltage switchgear.

- Catalog code: ext_env_sens
- Model: EXT-ENV-SENS
- Category: SF6 gas solutions › Partial discharge and temperature
- Product page: https://avigan.com.ua/wika/en/products/ext_env_sens
- Price: on request
- Supplier: AVIGAN (TOV VIKA Prylad), official WIKA partner in Ukraine

## Overview

The advanced monitoring solution for monitoring partial discharge and temperature in medium-voltage switchgear uses surface acoustic wave and ultra high ...

## Applications

- Condition monitoring for medium-voltage switchgear in conjunction with the reader (AMS01), the antenna (AN-F1) for partial discharge detection by UHF and the passive SAW wireless temperature sensor (TSA-EV11)
- Measuring the ambient temperature, relative humidity and dew point
- Compatible with ANSI and IEC medium-voltage standards
- New installation or retrofitting of medium-voltage switchgears

## Special features

- Easy to install and commission
- Maintenance-free
- Comprehensive data communication (local, remote, Modbus ® , SCADA, IIoT service)

## Specifications

| Parameter | Value |
|---|---|
| model | EXT-ENV-SENS |
| product family | EXT |
| short description | Environmental sensor for ambient temperature, relative humidity and dew point, used with reader AMS01 for condition monitoring in medium-voltage switchgear. |
| subcategory | Environmental sensor |
| certifications | IEC 62271 |
| ambient temp | -25 … 125 °C |
| ip rating | IP40 |
| weight kg | 0.012 |
| languages in datasheet | en; de |
| process connections | 4-pin terminal block, pitch 3.81 mm |
| wetted parts material | ABS, black; ABS |
| output signal | I2C |

## Datasheet tables

### Operating conditions

| Place of use | Indoor |
|---|---|
| Temperature of use / Operating temperature | -25 ... 125 °C [-13 ... 157 °F] |
| Mounting type | M4 screw (not included) |
| Ingress protection of the complete instrument | IP40 |
| Case | ABS, black |
| Weight | 12 g [0.42 oz] |

### Interface

| Protocol standard | I 2 C |
|---|---|
| Connector | 4-pin terminal block, pitch 3.81 mm[0.15 in] (included) |
| Recommended cable type | 4-wire, 0.25mm 2 (24 AWG), cable ø 5 mm[0.2 in] |
| Maximum cable length | 6 m[19.7 ft] |

### Temperature measurement

| Accuracy | -25 ... 125 °C [-13 ... 157 °F] ±2 K |
|---|---|

### Humidity measurement

| Operating range | 0 ... 100 %r.h. |
|---|---|
| Accuracy | ± 10 %r.h. |

## Documents

- [ds_sp6328_en_co_f1b7bd](https://avigan.com.ua/wika/docs/wika/ds_sp6328_en_co.pdf) — PDF, 295 KB, en