The D105 is a small 3½ digit LCD display designed for use in 2-wire systems as an easy to install indicator. Powered by the 4-20 mA signal itself, the D105 enables you to observe the signal anywhere along the loop - just cut the wire and insert the D105! The user can adjust the D105 so that 20 mA can be displayed as a number between 1.00 and 1999. Size 10 x 6½ x 4 cm, protection class IP65. Order number B041.
Alarm Indicator 210
This provides all you need for connection to a 2-wire transmitter - power supply (24 VDC), 3½ digit LCD display, high and low alarm contact outputs. It can also be used as a display and alarm transmitter on traditional analogue output loops of either 0-20 mA or 4-20 mA. The Alarm Indicator 210 measures just 12 x 12 x 6 cm, and is protected to IP65. The 210, combined with the OxyGuard 2-wire probe Model 420, is ideal for all applications requiring a simple single channel oxygen measurement - both dissolved or gaseous! Order number B042.
JTX Junction Box
This is a simple yet useful item. It consists of a watertight junction box with four terminals - two for connection to the transmitter and two for the outgoing cable, with two test sockets in between. You can then measure the current in the loop by connecting a mA meter to the test sockets - you don't have to break the loop!