DESCRIPTION:
The HI7871 and HI7873 are 2-wire transmitter level controllersdesigned especially for long distance control of liquid levels. They are suitable for many aquarium applications such as level control in tanks, sumps, and RO/DI water reservoirs.The HI7871 is a basic HIGH and LOW level controller whereas the HI7873 has anadditional overflow alarm as an additional feature.
HOLDER
The HI7874 Holder is made of durable black ABS.
It contains the resinated amplifier circuit and the 2-wire terminal board.
MEASURING BARS
The HI731324 Measuring Bars are made of stainless steel and are immersed in the
liquid being monitored.The HI7871 requires 3 bars, one for low level, one for
high level and the third as a ground sensor.The HI7873 requires 4 bars, the
additional bar is for overflow measurement. Each bar is 0.5m (1.5 ft)long and two
or more can be screwed together to make longer ones if needed.
A Complete System Requires;
SPECIFICATIONS:
| SPECIFICATION | HI7871 | HI7873 |
| TRANSMISSION | 300 meters (max) | 300 meters (max) |
| CONNECTOR | 11 pin | 11 pin |
| LEVEL ADJUSTMENT | High and Low | High, Low and Over |
| LEVEL INDICATION | High and Low | High, Low and Over |
| SENSOR BARS | Requires 3 | Requires 4 |
| TRANSMITTER | HI7874 (order seperately) | HI7874 (order seperately) |
| OUTPUT CONTACT | One 2A/220V relay rated up to 1,000,000 closures |
Two 2A/220V relays rated up to 1,000,000 closures |
| POWER SUPPLY | 110/115V 50/60Hz (HI7871/115) | 110/115V 50/60Hz (HI7873/115) |
| ENVIRONMENT | 0 to 50°C (32 to 122°F) RH 95% non condensing |
0 to 50°C (32 to 122°F) RH 95% non condensing |
| DIMENSIONS | 79 x 49 x 95mm (3.11 x 1.93 x 3.74") | 79 x 49 x 95mm (3.11 x 1.93 x 3.74") |
| WEIGHT | 130 g (4.68 oz.) | 130 g (4.68 oz.) |
HOW TO ORDER:
HI7871/115:High-Low Mini Level Controller, supplied with mounting brackets 115VAC..... $110.00
HI7873/115:High-Low-Over Mini Level Controller, supplied with mounting brackets 115VAC.... $120.00
