Honeywell UDA2182 manual Two-Point AutoCal Operation

Select piping and valves based on chemical resistance and pressure ratings

Make the process connections as shown in Figure 15-12 or Figure 15-13. Materials and components should be carefully selected for chemical resistance to process and buffer solutions at anticipated temperatures. Be sure that valves and fittings have sufficient pressure ratings to withstand pressure peaks which will occur when process flow is blocked.

Minimize liquid volume in system

Keep pipe sizes small and couplings close to minimize the liquid volume in the system. Smaller volumes require less buffer solution and less time to rinse and to calibrate.

	Items outside this area
	provided by user
buffer	S3
	buffer
solution 1	solution 2	9782
		to process
	pH	S4
	electrode
	S2	to drain
process	rinse water
sample
	S1
	Two-Point Calibration

TIME

Alarms Held

Relay 1 Activated

Rinse Duration

Standardize Duration, Relay 2 Activated

Slope Duration, Relay 3 Activated

(Same Period as Standardize)

Resume DelayTime (seconds)

Normal Operation

1.709"

Interval Between

Cleaning/Calibration

(days or hours)

TM

Two-Point AutoCal Operation*

*One-point AutoCal and AutoClean operations omit steps using Relay 3 and Relays 2 & 3, respectively.

Figure 15-13 Two-Point AutoCal Operation

January 2009 UDA2182 Universal Dual Analyzer Product Manual 237