Chemical Dosing (Engineered Unit)

Bulk storage and duty/standby metering pumps that dose a purchased chemical into a process stream, quoted on the chosen chemical's own basis (for example mg/l as Fe).

Which simulation? Running this unit uses the client-side, PLC-style scan simulation in your browser, not the server-side biokinetic process simulation. See Which "simulation" this section is about.

Published. Seeded at published since 2026-10-24, so every Engineer in a tenant whose plan includes the engineering suite sees it in the stencil.

Slug	chemical-dosing
Name in the library	Chemical Dosing (Engineered Unit)
Category	Process Units/engineered
Seeded	version 0.1.0, maturity published
Interface points	7 — process_flow, analyser, dose_point, delivery, carrier_water, signals, power
Asked on drop	9
Control loops	8 generated graphs

What it models

The first engineered unit whose output is a mass of a chemical and whose ports are on the chemical medium. The chemical and its commercial form are read from the chemical library; the dose is flow-paced on a works flow read as a published signal, with an optional residual trim on an analyser. The drawing carries the tanker fill point with its automatic fill valve, the bulk tank in its bund with level transmitter and hardwired switches, duty/standby diaphragm pumps, the dosing line with carrier water, and the control panel.

Its dose-point port publishes the strength with its basis species, not just a flow.

Not the Chemical Dosing Skid

The ordinary template Chemical Dosing Skid (chemical-dosing-skid) is a different, published template that places geometry only. This page is the engineered unit.

Source

Template: packages/web/flow/templates/library/level-1/chemical-dosing.ts; seed: ParametricTemplateSeeder (ChemicalDosingId). Placing it works as described in Placing an Engineered Template. As with the other units, nobody has recorded watching it run in a browser.